Warnings in
diagnosis section
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Details
regarding warning
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caution |
When servicing a CAN bus
line, earth yourself by touching a metal
object such as an unpainted water pipe. If
you fail to do, a component connected to the
CAN bus line may be broken.
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caution |
A digital multimeter should be
used.
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When measuring
resistance value or voltage in CAN bus lines, use a
digital multimeter. If not using a digital multimeter,
the equipment, which are connected through the CAN
communication lines, may be damaged.
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caution |
When measuring the resistance,
disconnect the negative battery
terminal.
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Disconnect the
negative battery terminal when measuring the resistance
value in the CAN bus line. If you fail to do so, the
equipment, which are connected through the CAN
communication lines, may be damaged.
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caution |
The test wiring harness should
be used.
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Always use the
test harness when measuring the voltage or resistance
value at the female connector. If you fail to do so,
connectors may be damaged.
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caution |
The strand end of the twist
wire should be within 10 cm from the
connector.
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![](../../../img/54/AC203824AB00ENG.png) If
you repair the wire due to a defective connector or its
terminal or harness wire, you should cut the wire so
that the strand end of the twist wire should be within
10 cm from the connector as shown. If it exceeds 10 cm,
twist the wiring harness just like the original twisted
wire. If the strand end exceeds 10 cm, a communication
error may be caused.
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caution |
Strictly observe the specified
wiring harness repair procedure.
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When you repair
a CAN bus line, observe the precautions on how to repair
the CAN bus line strictly. Refer to . If a
new wire is added or a splice point is modified for the
CAN_L or CAN_H line, an error in the CAN
communication may be caused.
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